Please post better photos.
It looks like they are laser marked, which can be very hard to photograph / read unless you get just the right light and angle.
It looks like they are laser marked, which can be very hard to photograph / read unless you get just the right light and angle.
Its impossible to read any of the text on the devices - I suggest you use some isopropanol to remove the surface flux and then photograph again to get clear and focussed shots of the chip.
Do you know who manufactured the pcb, or the country or origin - will give clues for the brand of "chip" which could help track down a part number.
Clean it with isopropyl alcohol and use flashlight to light it from the side to get a good contrast on the part number. Then just use a magnifier.
Pictures except #5 show a labels scratched off semiconductor, notice third line level with the plastic dimple is quite legible and surface shows typical injection die electroerosion fine grain surface, lines 1 and 2 are crudely scratched by hand, background is very different (lost original grain) and labels are unreadable ... clearly what maker wanted.
If he wanted to hide something from curious eyes,he succeeded.
Police level Forensic work will definitely read those, and more, (they can read gun or car engine serial numbers ground off with an abrasive stone, go figure) but that´s beyond us mere mortals.
If he wanted to hide something from curious eyes,he succeeded.
Police level Forensic work will definitely read those, and more, (they can read gun or car engine serial numbers ground off with an abrasive stone, go figure) but that´s beyond us mere mortals.